We're not sure how long this sale will last, but it looks like Codito-made board game apps are on sale right now. 

Uwe Rosenberg's Le Havre  is $0.99 (normally $4.99). 

Wolfgang Kramer and Michael Kiesling's Tikal is $0.99. 

Reiner Knizia's Tigris & Euphrates is $0.99. 

No idea how long it'll last, so grab 'em while you can!